<form method="POST" action="admin.php?task=login">
    <table width="500">
        <tr>
            <td>
                Login:
            </td>
            <td>
                <input type="text" value="<?=$this->request->getVar('login', '')?>" size="20" name="login">
            </td>
        </tr>
        <tr>
            <td>
                Password:
            </td>
            <td>
                <input type="password" value="" size="20" name="password">
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="submit" value="ok">
            </td>
        </tr>
    </table>
</form>